You can thank the FARS for having both of these limitations; you are obliged to follow the most restrictive.
Approach Climb Allows for a missed approach where the go-around must be flown with the aircraft in the approach configuration. FAR 25.121(d) requires that the climb gradient is calculated where Vs in this approach configuration does not exceed 110% of the Vs for the related landing configuration. The steady gradient may not be less than:
2.1% for 2 engine aircraft
2.4% for 3 engine aircraft
2.7% for 4 engine aircraft.
The approach climb is demonstrated:
Landing Climb
Landing climb gradient charts are calculated for go-around with the aircraft in the landing configuration where all engines are operating and the landing gear is extended. FAR 25.119 requires the steady climb gradient to be not less than 3.2% with:
Operationally these weights will allow you to execute a missed approach in most configurations. In some aircraft you will find that one of these limitations is always more restrictive, therefore you will only see one chart.
Mutt